Species Details

Hesperolinon didymocarpum

Lake County western flax

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Photo of Hesperolinon didymocarpum
© 2018 Aaron Arthur
Photo of Hesperolinon didymocarpum
© 2021 Aaron Arthur
Photo of Hesperolinon didymocarpum
© 2018 Aaron Arthur
Scientific Name:
Hesperolinon didymocarpum H.K. Sharsm.
Common Name:
Lake County western flax
Family: Linaceae
Element Code: PDLIN01070
USDA Plants Symbol: HEDI3
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: May-Jul
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Elevation:
330 - 365 meters
1085 - 1200 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Serpentine
Notes:
Known from fewer than ten occurrences in the Big Cyn. area near Middletown. Potentially threatened by grazing, agriculture, and urbanization. See University of California Publications in Botany 32:235-314 (1961) for original description.
Threats:
Taxonomy:
Threat List Total: 5
Total EOs % of EOs
EOs with Threat Listed: 4 67 %
THREAT LIST:
Grazing 3 50%
Other 1 16%
Recreational use (non-ORV) 1 16%
Dam/Inundation 1 16%
Erosion/runoff 1 16%
Total Occurrences: 6
Element Occurrence Ranks:
A B C D X U
0 2 2 0 0 2
Occurrence Status:
Historical >20 Years 5
Recent <=20 Years 1
Presence:
Presumed Extant 6
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Lake (LAK)
Quads: Name (Quad Code)
Middletown (3812275)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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